Contradiction with Matthew 5:9
Proverbs 7:1 emphasizes keeping commands close, whereas Matthew 5:9 promotes peace-making without mention of law adherence.
Matthew 5:9: Blessed [are] the peacemakers: for they shall be called the children of God.
Contradiction with Romans 10:4
Proverbs 7:1 highlights a personal responsibility for law, whereas Romans 10:4 presents Christ as the end of the law for righteousness.
Romans 10:4: For Christ [is] the end of the law for righteousness to every one that believeth.
Contradiction with Galatians 3:23-25
Proverbs 7:1 advises keeping the commandments, contradicting Galatians 3:23-25, which explains that the law was a guardian until faith came.
Galatians 3:23-25: But before faith came, we were kept under the law, shut up unto the faith which should afterwards be revealed.